Ratio of Mixture is 10:1, Platinum Cure System. A-2186-F Silicone Elastomer is a two-part, clear to translucent pourable silicone system which will cure at room temperature. Cure time can be reduced with elevated temperature. When properly cured, A-2186-F offers high tear strength along with other good physical properties. A-2186-F Offers a fast 2 hour cure time with a 15 minute work time.